Peanut (Arachis Hypogaea) Allergen Powder-Dnfp - Pharmacological Aspect

Overview:

Peanut (Arachis hypogaea) allergen powder-dnfp is taken by mouth and helps reduce allergic reactions, including severe ones like anaphylaxis, which can happen if someone accidentally eats peanuts. It is approved for people who have been diagnosed with a peanut allergy. The initial increased dose can be given to children and teens aged one to 17, and the treatment can continue in anyone aged one and older. Peanut (Arachis hypogaea) allergen powder-dnfp and a diet that avoids peanuts should be used. It is important to note that Peanut (Arachis hypogaea) allergen powder-dnfp is not meant to be used for emergency treatment of allergic reactions, including anaphylaxis. The Food and Drug Administration approved Peanut (Arachis hypogaea) allergen powder-dnfp on January 31, 2020.

Available Doses and Dosage Forms:

Peanut allergen powder-dnfp is a powder made from peanut flour that has been processed to remove most of the fat. It is designed to be taken by mouth and can be mixed into soft foods. The powder helps manage peanut allergies by gradually introducing small amounts of peanut protein. It comes in different forms:

• Capsules: Available in doses of 0.5 mg (milligram), 1 mg, 10 mg, 20 mg, and 100 mg.

• Sachets: Comes in a 300 mg packet.

For Patients:

How Does Peanut Allergy Occur?

Peanut allergies are serious and can cause life-threatening reactions like anaphylaxis. Peanut allergies in children have increased, and awareness has grown. Symptoms include breathing difficulties, swelling, and hives. Diagnosis requires tests from an allergist, and treatment often includes avoiding peanuts and carrying an Epinephrine injector. Early peanut introduction might help prevent allergies in some infants.

How Does Peanut (Arachis hypogaea) Allergen Powder-Dnfp Work?

Peanut allergen powder (PTAH), or AR101 (Aerumab), is a daily treatment that helps reduce the severity of allergic reactions in children and teens (ages four to 17) with peanut allergies. It is designed to protect against accidental peanut exposure.

What Is the Dosage and Administration of Peanut (Arachis hypogaea) Allergen Powder-Dnfp?

Peanut (Arachis hypogaea) allergen powder-dnfp is a powder taken by mouth.

• Capsules: Peanut protein capsules are available in different amounts (0.5 mg (milligram), one mg, 10 mg, 20 mg, and 100 mg).

• Sachets: Available with 300 mg of peanut protein.

Capsules should not be swallowed, and the powder should not be inhaled. Instead, open the capsule or sachet and mix the powder with a few spoon fulls of soft food like applesauce, yogurt, or pudding (at room temperature or cold). Mix it well and eat it right away. Afterward, wash one’s hands and throw away the empty capsules or sachets. Peanut (Arachis hypogaea) Allergen Powder-dnfp should be taken simultaneously with the meal, but only one dose is recommended daily. Do not take extra doses to make up for missing a dose. Also, avoid exercising and take hot showers or baths within three hours of taking Peanut (Arachis hypogaea) Allergen Powder-dnfp helps regulate the body temperature and heart rate. Ensure you have an epinephrine injector and learn how to use it before starting and during the Peanut (Arachis hypogaea) Allergen Powder-dnfp treatment.

Treatment Phases:

Peanut (Arachis hypogaea) Allergen Powder-dnfp treatment is done in three phases:

• Initial Dose Escalation: The first phase is done under medical supervision in a healthcare setting in case of severe allergic reactions. The doses are given one after the other on the same day, starting with a very small amount (Level A). Each dose is followed by a 20 to 30-minute observation period. After completing all levels, patients will be observed for at least 60 minutes before discharge. If they have a serious reaction requiring medical treatment, Peanut (Arachis hypogaea) Allergen Powder-dnfp should be stopped immediately.

• Up -Titration: If at least three mg of Peanut (Arachis hypogaea) Allergen Powder-dnfp is tolerated during the initial phase, start the up-titration phase the next day. Repeat the initial phase if more than four days have passed since the start of up-titration. This phase begins with a three mg dose and gradually increases over 11 levels. The first dose of each level is given under medical supervision, with at least 60 minutes of observation. If tolerated, the dose can be continued at home for two weeks. If a certain level is not tolerated, the dose must be adjusted, or the treatment should be stopped.

• Maintenance: After completing the up-titration phase, start the maintenance phase with a daily 300 mg dose. It is important to stay in regular contact with the healthcare provider to monitor the effectiveness and safety of the treatment. If one or two doses are missed, continue at the same level, but if three or more doses are missed, take consecutive doses and contact the healthcare provider to resume treatment under supervision.

How Effective Is Peanut (Arachis Hypogaea) Allergen Powder-Dnfp?

Starting oral immunotherapy early in preschool children with peanut allergies is safe and effective. Additionally, unlike other peanut therapies, the production of Peanut (Arachis hypogaea) Allergen Powder-dnfp is carefully managed to ensure a consistent and reliable amount of the key allergens, Ara h 1, Ara h 2, and Ara h 6.

What Are the Side Effects of Peanut (Arachis Hypogaea) Allergen Powder-Dnfp?

The most common side effects of Peanut (Arachis hypogaea) Allergen Powder-dnfp include stomach pain, vomiting, nausea, mouth itching or burning, throat irritation, coughing, runny nose, sneezing, throat tightness, wheezing, shortness of breath, itchy skin, hives, and itchy ears. Peanut (Arachis hypogaea) Allergen Powder-dnfp can also cause a severe allergic reaction called anaphylaxis, which can be life-threatening. It can cause stomach or digestive issues, including inflammation of the esophagus, known as eosinophilic esophagitis. Symptoms of this condition may include:

• Difficulty swallowing.

• Feeling like food is stuck in the throat.

• Burning sensation in the chest, mouth, or throat.

• Vomiting.

• Bringing up undigested food.

• Nausea.

Missed Dose:

If one or two doses of Peanut (Arachis hypogaea) Allergen Powder-dnfp are missed, continue at the same level. If three or more are missed, take consecutive doses and contact the healthcare provider to resume treatment under supervision.

Storage:

Keep Peanut (Arachis hypogaea) Allergen Powder-dnfp in the fridge at 36 to 46 degrees Fahrenheit (two to eight degrees Celsius). Do not freeze it. Keep it in its original package until ready to use.

Dietary Considerations:

People should avoid peanut-based foods.

For Doctors:

Indication: Peanut (Arachis hypogaea) Allergen Powder-dnfp is used to treat peanut allergy.

Dose: Peanut (Arachis hypogaea) Allergen Powder-dnfp is a powder given orally and can be mixed with soft foods, which helps manage peanut allergy.

Capsules:

• 0.5 mg.

• One mg.

• 20 mg.

• 100 mg.

Sachet:

• 300 mg.

Dosing Considerations:

• If patients have serious or repeated allergic reactions, including stomach issues, while increasing or maintaining their dose, their dose might need to be adjusted.

• If this happens, the healthcare provider may decide to keep the dose at the same level for longer, lower it, or stop it altogether.

• It is important to note that this powder is not meant to treat serious allergic reactions like anaphylaxis.

• For emergencies, patients should always have injectable epinephrine on hand and be educated on how to use it properly.

What Are the Pharmacological Aspects of Peanut (Arachis Hypogaea) Allergen Powder-Dnfp?

• Pharmacodynamics: Taking Peanut (Arachis hypogaea) Allergen Powder-dnfp involves three main steps:

  • Initial Dose Escalation (IDE): On the first day, five doses, starting at 0.5 mg and going up to six mg, will be increased, all taken in a single day.

  • Up-Dosing: After the first day, start taking one dose a day, gradually increasing from three mg to 300 mg. Stay on each dose for at least two weeks, and this is done based on how well it is handled.

  • Maintenance: Once 300 mg is reached, continue taking this daily dose.

Mix each powder dose into soft food and give the first dose at each new level under medical supervision.

• Mechanism of Action: The exact way Peanut (Arachis hypogaea) Allergen Powder-dnfp works must be fully understood. However, it is a complex drug made from peanut protein, produced from defatted peanut flour, with a clear allergen profile. Like other oral immunotherapies, the treatment starts with small doses of this peanut protein, gradually increasing in three structured phases. Over time, this helps reduce allergic reactions to peanuts.

Clinical Studies:

• Most Peanut (Arachis hypogaea) allergen powder-dnfp-related adverse events were mild to moderate. They occurred more frequently in the early stages of treatment and became milder and less frequent over time.

• Across five clinical trials, 944 participants (many with multiple allergies and high peanut sensitivity) took at least one dose of PTAH. Over 80 percent reached the maintenance dose of 300 mg per day.

• In the initial stages of increasing the dose, more participants experienced adverse events (AEs), leading to dose adjustments. However, as the doses increased, the frequency and severity of these events decreased.

• Common side effects included GI symptoms like abdominal pain, vomiting, and nausea. These symptoms were most common early and sometimes led to discontinuation. The overall incidence of a specific GI condition (EoE) was low.

• Some participants experienced systemic allergic reactions, including anaphylaxis. Most of these reactions were mild or moderate and occurred within two hours of dosing. The risk of severe reactions was low, and many participants chose to continue treatment despite these events.

• The study highlighted that allergic reactions from treatment might be less unpredictable and easier to manage than those caused by accidental peanut exposure. Even though treatment may increase the risk of allergic reactions, many patients and families perceive the benefits outweigh the risks.

• PTAH's safety profile was manageable and improved over time. These findings help guide discussions about the risks and benefits of peanut oral immunotherapy.

• The data were collected from trials with different designs and locations, and there is a potential for survivor bias as fewer participants continued the treatment over time.

What Are the Contraindications of Peanut (Arachis Hypogaea) Allergen Powder-Dnfp?

• Peanut (Arachis hypogaea) allergen powder-dnfp should not be used in people with uncontrolled asthma.

• Peanut (Arachis hypogaea) allergen powder-dnfp should not be used in people with eosinophilic esophagitis and another eosinophilic gastrointestinal disease.

Warnings and Precautions:

• Peanut (Arachis hypogaea) allergen powder-dnfp treatment can cause a serious and life-threatening allergic reaction called anaphylaxis at any time during use.

• Patients must have injectable epinephrine in hand, should be trained on how to use it, and should get immediate medical help if they use it.

• Peanut (Arachis hypogaea) allergen powder-dnfp is unsafe for people with uncontrolled asthma.

• If an anaphylactic reaction happens, the dose may need to be changed.

• Patients should be watched for at least 60 minutes during and after the first dose and any dose increases.

• Stop taking Peanut (Arachis hypogaea) allergen powder-dnfp and seek emergency care immediately upon noticing symptoms like:

  • Difficulty breathing or wheezing.

  • Chest pain or tightness.

  • Tightness in throat.

  • Difficulty swallowing or speaking.

  • Swelling of face, lips, eyes, or tongue.

  • Dizziness or fainting.

  • Severe stomach pain, vomiting, or diarrhea.

  • Hives (itchy, raised skin bumps).

  • Severe skin flushing.

What Are the Drug Interactions of Peanut (Arachis Hypogaea) Allergen Powder-Dnfp?

If the doctor prescribes Peanut Oral Allergen Powder to manage the pain, always inform them about another medicine intake before the treatment. Only start, stop, or adjust medications after talking to the doctor or pharmacist. Peanut oral allergen powder has no known serious interactions with other medications. However, this does not cover all possible interactions or side effects. Always inform the doctor or pharmacist about all the medications or products the person uses, and keep a list of them. Consult with the healthcare professional for any additional advice or questions about the health.

Specific Considerations:

• Pregnancy: There is not enough information about the safety of taking Peanut (Arachis hypogaea) allergen powder-dnfp during pregnancy. If a pregnant woman with a peanut allergy accidentally eats peanuts, it can cause a severe allergic reaction called anaphylaxis. This can lead to a dangerous drop in blood pressure, which might affect the baby by reducing the blood flow to the placenta, putting the baby at risk.

• Breastfeeding: There is no information on whether Peanut (Arachis hypogaea) Allergen Powder-dnfp passes in the breast milk, how it might affect breastfeeding infants, or if it affects milk production.